E07
Harvey
Program Memory / Control Board Fault
Harvey softener shows E07 and skips or repeats stages during regeneration
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Corrupted control program, Failing control PCB, Electrical surge damage, Loose board connectors
How to Fix / Troubleshooting
Safety: Disconnect from mains before opening the control head.
- Hard reset: Unplug the softener for at least 5 minutes to allow capacitors to discharge. Plug back in and see if E07 clears.
- Check connectors: Remove the control cover and gently press all multi-pin connectors onto the board to ensure good contact.
- Restore factory settings: Use the Harvey programming menu to perform a factory reset (refer to the manual). Re-enter hardness, time, and capacity settings.
- Test regeneration: Start a manual regeneration and observe whether the unit now follows the correct sequence without skipping.
If E07 persists after a factory reset and connector check, the control PCB is likely defective and should be replaced with the correct Harvey board by a professional.
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Repair Difficulty
Hard
4/5
Required Part
Harvey control PCB
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